This is a necklace I put together myself. The cross was a gift from my grandfather; the rose quartz and cat's eye amethyst I got online for $0.20-0.30 each; the Amber I bought online in a strand for $2-5; and the silver colored copper wire I got for Christmas.
The effect this necklace has is to seize the 7 chakras to match that of the ground and heart chakras; while the cross is used as a physical connection to my God.